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Hi, I have tried to render plastic transparent without background and with alpha channel, everything seems to works how should but when I turn off background, plastic is not transparent anymore and it turns to black. I have tried Arnold opaque tag and Transmit AOVs of Arnold Standard Surface but no help. How I can render this without background so I can see the background through it in Photoshop?
Thx
Are you lighting it with a skydome light? If so, you have the visibility attributes.
Otherwise, you could connect a ray_switch shader to the background.